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author | Dean Camera <dean@fourwalledcubicle.com> | 2009-07-16 08:15:27 +0000 |
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committer | Dean Camera <dean@fourwalledcubicle.com> | 2009-07-16 08:15:27 +0000 |
commit | 37f8a84f35dadf27a6f8997b675238269f854b45 (patch) | |
tree | f8c89a44d38f127643ed59add4a8e7c2558e2345 /LUFA/ManPages/CompileTimeTokens.txt | |
parent | f85a53a31b00190ad726f509ad275079fc6eb994 (diff) | |
download | lufa-37f8a84f35dadf27a6f8997b675238269f854b45.tar.gz lufa-37f8a84f35dadf27a6f8997b675238269f854b45.tar.bz2 lufa-37f8a84f35dadf27a6f8997b675238269f854b45.zip |
Added new TOTAL_NUM_CONFIGURATIONS option, removed USE_SINGLE_DEVICE_CONFIGURATION compile time option (but silently convert it to USE_SINGLE_DEVICE_CONFIGURATION internally for compatibility).
Added new USE_FLASH_DESCRIPTORS compile time option. By default, descriptors can now lie in mixed memory spaces (specified by a new parameter to the CALLBACK_USB_GetDescriptor() function) unless one of the USE_*_DESCRIPTORS compile time option is specified.
Diffstat (limited to 'LUFA/ManPages/CompileTimeTokens.txt')
-rw-r--r-- | LUFA/ManPages/CompileTimeTokens.txt | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/LUFA/ManPages/CompileTimeTokens.txt b/LUFA/ManPages/CompileTimeTokens.txt index 3d15759e4..2d9ec7a95 100644 --- a/LUFA/ManPages/CompileTimeTokens.txt +++ b/LUFA/ManPages/CompileTimeTokens.txt @@ -67,12 +67,14 @@ * This section describes compile tokens which affect USB driver stack as a whole in the LUFA library.
*
* <b>USE_RAM_DESCRIPTORS</b> - ( \ref Group_Descriptors ) \n
- * Define this token to indicate to the USB driver that device descriptors are stored in RAM, rather than the default of
- * the AVR's flash. RAM descriptors may be desirable in applications where speed or minimizing flash usage is more important
- * than RAM usage, or applications where the descriptors need to be modified at runtime.
+ * Define this token to indicate to the USB driver that all device descriptors are stored in RAM, rather than being located in any one
+ * of the AVR's memory spaces. RAM descriptors may be desirable in applications where the descriptors need to be modified at runtime.
+ *
+ * <b>USE_FLASH_DESCRIPTORS</b> - ( \ref Group_Descriptors ) \n
+ * Similar to USE_RAM_DESCRIPTORS, but all descriptors are stored in the AVR's FLASH memory rather than RAM.
*
* <b>USE_EEPROM_DESCRIPTORS</b> - ( \ref Group_Descriptors ) \n
- * Similar to USE_RAM_DESCRIPTORS, but descriptors are stored in the AVR's EEPROM memory rather than RAM.
+ * Similar to USE_RAM_DESCRIPTORS, but all descriptors are stored in the AVR's EEPROM memory rather than RAM.
*
* <b>USE_NONSTANDARD_DESCRIPTOR_NAMES</b> - ( \ref Group_Descriptors ) \n
* The USB 2.0 standard gives some rather obscure names for the elements in the standard descriptor types (device, configuration,
@@ -93,11 +95,11 @@ * defined to a non-zero value instead to give the size in bytes of the control endpoint, to reduce the size of the compiled
* binary.
*
- * <b>USE_SINGLE_DEVICE_CONFIGURATION</b> - ( \ref Group_Device ) \n
+ * <b>TOTAL_NUM_CONFIGURATIONS</b> - ( \ref Group_Device ) \n
* By default, the library determines the number of configurations a USB device supports by reading the device descriptor. This reduces
* the amount of configuration required to set up the library, and allows the value to change dynamically (if descriptors are stored in
- * EEPROM or RAM rather than flash memory) and reduces code maintenance. However, many USB device projects use only a single configuration.
- * Defining this token enables single-configuration mode, reducing the compiled size of the binary at the expense of flexibility.
+ * EEPROM or RAM rather than flash memory) and reduces code maintenance. However, this value may be fixed via this token in the project
+ * makefile to reduce the compiled size of the binary at the expense of flexibility.
*
* <b>CONTROL_ONLY_DEVICE</b> \n
* In some limited USB device applications, there are no device endpoints other than the control endpoint; i.e. all device communication
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